felix86 26.08

felix86 26.08 is released! This month we implemented 80-bit software emulation support and fixed a ton of bugs.

Read the blog post: https://felix86.com/felix86-26-08/

Compatibility list: https://felix86.com/compat/

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What's Changed

• Implement some ptrace edge cases by @OFFTKP in #575
• Add berkeley-softfloat-3 by @OFFTKP in #576
• Build vdso instead of vendoring it, use both HASH and GNU_HASH by @OFFTKP in #577
• Allow for custom x86-64 binutils path by @OFFTKP in #578
• VDSO CMakeLists improvements by @OFFTKP in #579
• Implement far call and far ret, fix some issues with gvisor tests by @OFFTKP in #580
• Return error codes for some bad syscalls by @OFFTKP in #581
• Set /proc/self/cmdline and /proc/self/environ to correct values by @OFFTKP in #582
• Allow ptrace commands on host stops by @OFFTKP in #583
• Implement preadv2 and pwritev2 for 64-bit by @OFFTKP in #584
• Check pointers in sigprocmask by @OFFTKP in #585
• Allow optionally passing program to --shell by @OFFTKP in #586
• added syscall header manually by @hazelwiss in #587
• Update version by @OFFTKP in #588
• Add missing return on legacy sigreturn by @OFFTKP in #589
• Fix compile warnings by @hazelwiss in #590
• Use u8 for FPU tag word by @OFFTKP in #591
• Package the logo with the monthly artifact by @OFFTKP in #593
• Implement --set-config and --get-config by @hazelwiss in #594
• Make set-config and get-config case-insensitive by @OFFTKP in #595
• Update FEX tests and handle NaN/overflow behavior more accurately by @OFFTKP in #546
• Flush x87 state on EMMS by @OFFTKP in #596
• Implement ADCX and ADOX instructions by @OFFTKP in #597
• Handle INT with unknown immediate by @OFFTKP in #598
• Fix shell-debug and shell being flipped by @OFFTKP in #599
• Raise #UD2 for invalid instructions and #GP for bad CS by @OFFTKP in #600
• Fix default FPU tag word value by @OFFTKP in #601
• Use Float80 for storage of x87 floats by @OFFTKP in #592
• Added source origin for config by @hazelwiss in #602
• Added option for alternative Felix86 bash_history file in configs by @hazelwiss in #603
• Implement sendfile64 by @OFFTKP in #604
• Get rid of __FELIX86_PTRACE_TRACER by @OFFTKP in #605
• Move the configuration file to a root-owned directory by @OFFTKP in #606
• Properly align xsave area in signal context by @OFFTKP in #607
• Added missing internal-linkage qualifiers by @hazelwiss in #608
• Implement software support for 80-bit floats by @OFFTKP in #609
• Warn instead of erroring on unimplemented syscall by @OFFTKP in #610
• CI: Add check for commit message by @OFFTKP in #611
• Recompiler: Implement FBLD and FBSTP by @OFFTKP in #612
• Linux: Fix close_range bug by @OFFTKP in #613
• Recompiler: Make compile return correct address by @OFFTKP in #614
• Recompiler: Implement IN and OUT by @OFFTKP in #615
• Thunks: Fix TEXTREL in libs by @OFFTKP in #616
• Linux: Save/restore CS on signal handler correctly by @OFFTKP in #617
• Recompiler: Update trap flag on IRETQ by @OFFTKP in #618
• Thunks: Make sure executable stack is disabled on older compilers by @OFFTKP in #619
• Recompiler: Handle unaligned LOCK SUB by @OFFTKP in #620
• CI: Check for leading space in title by @OFFTKP in #621
• Linux: Reduce initial BRK size by @OFFTKP in #623
• Recompiler: Implement byte XADD by @OFFTKP in #622
• Recompiler: Don't flushX87 before the instruction when single stepping by @OFFTKP in #624
• Recompiler: Properly fault on invalid x87 memory access by @OFFTKP in #626
• Chore: Add .gitattributes file by @OFFTKP in #625
• Tools: Emit reduced precision X87 counts by @OFFTKP in #628
• Recompiler: Implement INT1 by @OFFTKP in #627
• Recompiler: Implement CLI and STI by @OFFTKP in #630
• Chore: Update installation instructions in README by @OFFTKP in #629
• Recompiler: Fallthrough to next block if possible by @OFFTKP in #631

New Contributors

• @hazelwiss made their first contribution in #587

Full Changelog: 26.07...26.08